Pipe support block



FIG. 1 is a bottom perspective view of a pipe support block showing my new design;

FIG. 2 is a right or a left side elevational view of FIG. 1.

FIG. 3 is a right or a left side elevational view of FIG. 1.

FIG. 4 is a front view of FIG. 1;

FIG. 5 is a back view of FIG. 1.

FIG. 6 is a top plane view of FIG. 1; and,

FIG. 7 is a bottom plane view FIG. 1.

The broken lines in the drawings depict environmental subject matter only and form no part of the claimed design. 

The ornamental design for a pipe support block, as shown and described. 